CTICasesInteratrial Septal Aneurysm with Patent Foramen Ovale (PFO)
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Imaging findings
Gated cardiac CT for pulmonary vein mapping revealed bowing and thinning of the interatrial septum, consistent with an interatrial septal aneurysm. An associated patent foramen ovale (PFO) was clearly demonstrated by the passage of contrast from the left atrium to the right atrium.
Key takeaways
Interatrial septal aneurysms are characterized by a prominent bowing and often thinning of the interatrial septum. In such cases, it is crucial to actively look for an associated patent foramen ovale (PFO), given their frequent coexistence. Recognition is important due to the potential association with paradoxical embolism.
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